An Efficient Synthesis of 5-Silyl-2,3-dihydrofurans via Acid-Catalyzed Ring-Enlargement of Cyclopropyl Silyl Ketones and Their Functionalization.

ChemInform ◽  
2006 ◽  
Vol 37 (5) ◽  
Author(s):  
Mitsunori Honda ◽  
Tomoyuki Naitou ◽  
Hiromitsu Hoshino ◽  
Seiji Takagi ◽  
Masahito Segi ◽  
...  
Keyword(s):  
Efficient Synthesis ◽  
Ring Enlargement ◽  
Acid Catalyzed

An efficient synthesis of 5-silyl-2,3-dihydrofurans via acid-catalyzed ring-enlargement of cyclopropyl silyl ketones and their functionalization

2005 ◽  
Vol 46 (43) ◽  
pp. 7345-7348 ◽  
Author(s):  
Mitsunori Honda ◽  
Tomoyuki Naitou ◽  
Hiromitsu Hoshino ◽  
Seiji Takagi ◽  
Masahito Segi ◽  
...  
Keyword(s):  
Efficient Synthesis ◽  
Ring Enlargement ◽  
Acid Catalyzed

Efficient Synthesis of Chromenes from Vinyl o-Quinone Methides via a Brønsted Acid Catalyzed Electrocyclization Process

Synthesis ◽  
2018 ◽  
Vol 50 (12) ◽  
pp. 2416-2422 ◽  
Author(s):  
Man-Su Tu ◽  
Guang-Jian Mei ◽  
Feng Shi ◽  
Si-Jia Liu ◽  
Xiao-Li Jiang ◽  
...  
Keyword(s):  
Efficient Method ◽  
Research Area ◽  
Environmentally Benign ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Efficient Synthesis ◽  
Quinone Methides ◽  
Efficient Approach ◽  
Brönsted Acid ◽  
Acid Catalyzed

An efficient approach for the synthesis of chromene derivatives from vinyl o-quinone methides was established via a Brønsted acid catalyzed electrocyclization. By using this methodology, a series of structurally diversified chromenes was synthesized in a highly atom-economic and environmentally benign manner with generally good to excellent yields (up to 98% yield). This reaction will not only provide an efficient method for the construction of chromene scaffolds, but also enrich the research area of o-quinone methides.

Acid-Catalyzed Rearrangement of Diaryl Hydrazides for the Efficient Synthesis of Functionalized 2,2‘-Diamino-1,1‘-biaryls

2004 ◽  
Vol 69 (17) ◽  
pp. 5778-5781 ◽  
Author(s):  
Young-Kwan Lim ◽  
Jin-Woo Jung ◽  
Haiwon Lee ◽  
Cheon-Gyu Cho
Keyword(s):  
Efficient Synthesis ◽  
Acid Catalyzed

Efficient Synthesis of Diarylmethylamines via Lewis Acid Catalyzed Friedel–Crafts Reactions of Donor–Acceptor Aziridines with N,N-Dialkylanilines

Synthesis ◽  
2019 ◽  
Vol 52 (02) ◽  
pp. 281-289
Author(s):  
Yerin Kim ◽  
Yong Il Kwon ◽  
Sung-Gon Kim
Keyword(s):  
Lewis Acid ◽  
Efficient Synthesis ◽  
Broad Scope ◽  
Donor Acceptor ◽  
Acid Catalyzed ◽  
High Yields

A method for efficient and mild synthesis of diarylmethylamine scaffold, via Lewis acid catalyzed Friedel–Crafts reaction of donor­–acceptor aziridines with N,N-dialkylanilines to afford a biologically important diarylmethylamine derivatives in high yields (up to 88%), is presented. This reaction is suitable for the synthesis of various diarylmethylamine derivatives and has a broad scope for electron-rich arenes, including dimethoxybenzene.

scholarly journals Lewis acid catalyzed annulation of spirocyclic donor–acceptor cyclopropanes with exo-heterocyclic olefins: access to highly functionalized bis-spirocyclopentane oxindole frameworks

2019 ◽  
Vol 55 (49) ◽  
pp. 7069-7072 ◽  
Author(s):  
Kuldeep Singh ◽  
Sourav Pramanik ◽  
Trevor A. Hamlin ◽  
Biplab Mondal ◽  
Dinabandhu Das ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Ring Enlargement ◽  
Donor Acceptor ◽  
Acid Catalyzed

Oxindole-activated spiro-DAC is used as synthon to prepare complex bis-spirocyclopentane oxindole frameworks via ring-enlargement.

Highly Efficient Synthesis of Quaternary α-Hydroxy PhosphonatesviaLewis Acid-Catalyzed Hydrophosphonylation of Ketones

2009 ◽  
Vol 351 (16) ◽  
pp. 2567-2572 ◽  
Author(s):  
Xin Zhou ◽  
Yanling Liu ◽  
Lu Chang ◽  
Jiannan Zhao ◽  
Deju Shang ◽  
...  
Keyword(s):  
Efficient Synthesis ◽  
Highly Efficient ◽  
Acid Catalyzed
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